An electric cable of copper has just one wire of radius 9 mm. Its resistance is 
. This single copper wire of cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to
a)
b)
c)
d)
An electric cable of copper has just one wire of radius 9 mm. Its resistance is . This single copper wire of cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to
a)
b)
c)
d)
Question ID - 150316 | SaraNextGen Top Answer
An electric cable of copper has just one wire of radius 9 mm. Its resistance is . This single copper wire of cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to
a)
b)
c)
d)
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An electric cable of copper has just one wire of radius 9 mm. Its resistance is |
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1 Answer
127 votes
Answer Key / Explanation : (a) -
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(a) For one wire cable, Resistance, For other wire of cable, Resistance,
When six wires each of resistance
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are connected in parallel, their effective resistance will be
127 votes
Answer Link
127